Search the Community
Showing results for tags 'urasterella verruculosa'.
-
Originally described under the name Urasterella verruculosa Lehmann 1957. Taxonomy from Fossilworks.org. Description from Südkamp 2017, p. 130: " The five, ribbon-like, flattened long arms join at the mouth frame; there is no interbrachial disc. The mouth frame is built as a ring of robust plates. The plates of the dorsal surface (radials, a primary circlet, and the large madreporite) are difficult to determine with certainty. Pedicellariae are irregularly arranged on the dorsal surface and as an organized fringe by the spacing of the adambulacrals. The pedicellariae are rounded triangular in outline. The ambulacrals are flat plates with a T-shaped ridge. Their arrangement across the arm midline is neither strictly paired nor alternate." Identified by oilshale using Südkamp 2017. References: Lehmann. W. M. (1957) Die Asterozoen in den Dachschiefern des rheinischen Unterdevons. Abhandlungen des Hessischen Landesamtes für Bodenforschung 21:1-160. Hotchkiss, Frederick & Glass, A.. (2010) Bdellacoma in the Hunsrück Slate (Lower Devonian): Reidentification of Urasterella verruculosa (Asteroidea, Bdellacomidae). Echinoderms: Durham - Proceedings of the 12th International Echinoderm Conference. 15-21. 10.1201/9780203869543-c3. Südkamp, W. (2017) Life in the Devonian. Identification book Hunsrück Slate fossils. Verlag Dr. Friedrich Pfeil. München 2017. ISBN978-3-89937-221-2.
-
- 1
-
- bdellacoma
- bundenbach
- (and 6 more)
-
Originally described under the name Urasterella verruculosa Lehmann 1957. Unfortunately, the slate was sawed and formatted before the starfish was discovered. A saw kerf goes right through it. Taxonomy from Fossilworks.org. Description from Südkamp 2017, p. 130: " The five, ribbon-like, flattened long arms join at the mouth frame; there is no interbrachial disc. The mouth frame is built as a ring of robust plates. The plates of the dorsal surface (radials,, a primary circlet and the large madreporite) are difficult to determine with certainity. Pedicellariae are irregularly arranged on the dorsal surface and as an organized fringe by the spacing of the adambulacrals. The pedicellariae are rounded triangular in outline. The ambulacrals are flat plates with a T-shaped ridge. Their arrangement across the arm midline is neither strictly paired nor alternate." Identified by oilshale using Südkamp 2017. References: Lehmann. W. M. (1957) Die Asterozoen in den Dachschiefern des rheinischen Unterdevons. Abhandlungen des Hessischen Landesamtes für Bodenforschung 21:1-160. Hotchkiss, Frederick & Glass, A.. (2010) Bdellacoma in the Hunsrück Slate (Lower Devonian): Reidentification of Urasterella verruculosa (Asteroidea, Bdellacomidae). Echinoderms: Durham - Proceedings of the 12th International Echinoderm Conference. 15-21. 10.1201/9780203869543-c3. Südkamp, W. (2017) Life in the Devonian. Identification book Hunsrück Slate fossils. Verlag Dr. Friedrich Pfeil. München 2017. ISBN978-3-89937-221-2.
-
- 1
-
- bdellacoma
- bundenbach
- (and 6 more)